# -*- coding: utf-8 -*-
"""
Created on Sun Jul  7 08:49:38 2019

@author: Administrator
"""
import requests
import random
from pymongo import MongoClient
import time
import numpy as np
from bs4 import BeautifulSoup

# Mongo配置
conn=MongoClient('127.0.0.1', 27017)
db=conn.lagou                   #连接lagou数据库，没有则自动创建
mongo_lagou=db.job                 #使用job集合，没有则自动创建

user_agent=[
    "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
    "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-us) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50",
    "Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Firefox/38.0",
    "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; .NET4.0C; .NET4.0E; .NET CLR 2.0.50727; .NET CLR 3.0.30729; .NET CLR 3.5.30729; InfoPath.3; rv:11.0) like Gecko",
    "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)",
    "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.0)",
    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:2.0.1) Gecko/20100101 Firefox/4.0.1",
    "Mozilla/5.0 (Windows NT 6.1; rv:2.0.1) Gecko/20100101 Firefox/4.0.1",
    "Opera/9.80 (Macintosh; Intel Mac OS X 10.6.8; U; en) Presto/2.8.131 Version/11.11",
    "Opera/9.80 (Windows NT 6.1; U; en) Presto/2.8.131 Version/11.11",
    "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_0) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Maxthon 2.0)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; TencentTraveler 4.0)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; The World)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; SE 2.X MetaSr 1.0; SE 2.X MetaSr 1.0; .NET CLR 2.0.50727; SE 2.X MetaSr 1.0)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; 360SE)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Avant Browser)",
    "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)",
    "Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5",
    "Mozilla/5.0 (iPod; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5",
    "Mozilla/5.0 (iPad; U; CPU OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5",
    "Mozilla/5.0 (Linux; U; Android 2.3.7; en-us; Nexus One Build/FRF91) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1",
    "MQQBrowser/26 Mozilla/5.0 (Linux; U; Android 2.3.7; zh-cn; MB200 Build/GRJ22; CyanogenMod-7) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1",
    "Opera/9.80 (Android 2.3.4; Linux; Opera Mobi/build-1107180945; U; en-GB) Presto/2.8.149 Version/11.10",
    "Mozilla/5.0 (Linux; U; Android 3.0; en-us; Xoom Build/HRI39) AppleWebKit/534.13 (KHTML, like Gecko) Version/4.0 Safari/534.13",
    "Mozilla/5.0 (BlackBerry; U; BlackBerry 9800; en) AppleWebKit/534.1+ (KHTML, like Gecko) Version/6.0.0.337 Mobile Safari/534.1+",
    "Mozilla/5.0 (hp-tablet; Linux; hpwOS/3.0.0; U; en-US) AppleWebKit/534.6 (KHTML, like Gecko) wOSBrowser/233.70 Safari/534.6 TouchPad/1.0",
    "Mozilla/5.0 (SymbianOS/9.4; Series60/5.0 NokiaN97-1/20.0.019; Profile/MIDP-2.1 Configuration/CLDC-1.1) AppleWebKit/525 (KHTML, like Gecko) BrowserNG/7.1.18124",
    "Mozilla/5.0 (compatible; MSIE 9.0; Windows Phone OS 7.5; Trident/5.0; IEMobile/9.0; HTC; Titan)",
    "UCWEB7.0.2.37/28/999",
    "NOKIA5700/ UCWEB7.0.2.37/28/999",
    "Openwave/ UCWEB7.0.2.37/28/999",
    "Mozilla/4.0 (compatible; MSIE 6.0; ) Opera/UCWEB7.0.2.37/28/999",
     # iPhone 6：
    "Mozilla/6.0 (iPhone; CPU iPhone OS 8_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/8.0 Mobile/10A5376e Safari/8536.25", 
]
    

headers={ 'User-Agent': random.choice(user_agent),   # 随机选取头部代理
          'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
          'Referer': 'https://www.lagou.com/jobs/list_python?city=%E6%9D%AD%E5%B7%9E&cl=false&fromSearch=true&labelWords=&suginput=&labelWords=hot'
          }

# 请求r1，获取随机代理IP
r1=requests.get('http://47.100.21.174:8899/api/v1/proxies?limit=60').json()
# 拉勾主页
url1='https://www.lagou.com/jobs/list_{}?city=%E6%9D%AD%E5%B7%9E'
# 拉勾所有职位信息
url2='https://www.lagou.com/jobs/positionAjax.json?city=%E6%9D%AD%E5%B7%9E&needAddtionalResult=false'
# 拉勾具体职位信息
url3='https://www.lagou.com/jobs/{}.html'

def getInfo(url):
    headers={'User-Agent': random.choice(user_agent),
             'Referer': 'https://www.lagou.com/jobs/list_python?city=%E6%9D%AD%E5%B7%9E&cl=false&fromSearch=true&labelWords=&suginput=&labelWords=hot',
             'Accept-Language': 'zh-CN,zh;q=0.9'
             }
    proxy=random.choice(r1['proxies'])
    resp=requests.get(url,headers=headers,proxies={'http': 'http://{}:{}'.format(proxy['ip'], proxy['port'])})
    resp.encoding='utf-8'
    soup=BeautifulSoup(resp.text,'html.parser')
    text=[]
    try:
        t=soup.find('div',attrs={'class':'job-detail'})
        for i in t.findAll('p'):
            text.append(i.text)
        return "\n".join(text)
    except:
        return "Error"
    

for page in range(1,31):
    print('正在爬取第{}页'.format(page))
    s=requests.session()
    s.get(url1, headers=headers, timeout=2)               # 请求首页获取cookies
    cookies=s.cookies                                     # 为此次获取的cookies
    proxy=random.choice(r1['proxies'])
    data={
          'first':'true',
          'kd':'python',
          'pn':page
          }
    # 提交表单数据，做post申请
    r=requests.post(url2,headers=headers,cookies=cookies,proxies={'http': 'http://{}:{}'.format(proxy['ip'], proxy['port'])},data=data)
    r.encoding='utf-8'
    # 获取json数据
    result=r.json()
    positions=result['content']['positionResult']['result']
    for position in positions:
        positionId=position['positionId']
        companyFullName=position['companyFullName']
        district=position['district']
        education=position['education']
        financeStage=position['financeStage']
        firstType=position['firstType']
        secondType=position['secondType']
        thirdType=position['thirdType']
        createTime=position['createTime']
        jobNature=position['jobNature']
        positionAdvantage=position['positionAdvantage']
        positionName=position['positionName']
        salary=position['salary']
        workYear=position['workYear']
        skillLables=position['skillLables']
        detail=getInfo(url3.format(positionId))
        # 数据入库
        mongo_lagou.insert_one({
                'companyFullName': companyFullName,
                'district': district,
                'education': education,
                'financeStage': financeStage,
                'firstType': firstType,
                'secondType': secondType,
                'thirdType': thirdType,
                'createTime':createTime,
                'jobNature': jobNature,
                'positionAdvantage': positionAdvantage,
                'positionName': positionName,
                'salary': salary,
                'workYear': workYear,
                'skillLables': skillLables,
                'detail': detail
                 })
        time.sleep(3)
         # 加上随机的时间延迟
    rdtime=20*np.random.rand()
    time.sleep(rdtime)
print("爬取完成！")
        